Its official, as if it wasn’t already, Serena is one of the greatest of all time. With her 6th US Open title, Serena has achieved 18 major singles titles. She has now joined an elite club of tennis legends, the 18 Club, whose members include Chrissie Evert and Martina Navratilova. This small roster of tennis greats is only surpassed in the Open Era by Steffi Graf who holds the record of 22 grand slam titles. While incredibly impressive, greatness can’t be described by numbers alone. Her dominance on the court and revolutionizing of the female athletic form makes her a...